[Amps] Transformers

[Steve Thompson]

>>Will said:
>>
>>>Also, the very first step in designing a transformer is calculating its 
>>
>>core size from the output power in watts it needs to deliver.<
>>
>>A 'reductio ad absurdum' suggests that if core size and saturation doesn't
>>matter, there's no need for those big 1MW+ transformers that the power
>>companies use to be the size that they are......
Electromag was something that just didn't lodge in my brain at 
university and I struggled with inductor and transformer design for ages 
- especially trying to compare Gauss/Oersteds/inches with 
Teslas/Webers/metres. To anyone who shares my problems, I recommend 
http://ludens.cl/Electron/Magnet.html  The section on power has an 
interesting description of what determines power handling in a 
transformer. I'd welcome comments from those with a better understanding 
than me as to whether the information on the page is trustworthy.

Steve